Recently, modder Dehmaii returned to Kingdom Come: Deliverance II and offered a solution that will simplify loot trading.
The enthusiast added a merchant companion to the game, whom Indrzhikh (Henry) can call to make deals - no more returning to find the right NPC:
The mod allows you to summon an NPC to sell items to. Give him the items, send him away, and after a while you will receive your coins. He also offers cleaning services.
For his services, the NPC charges a commission, which depends not only on the value of the item, but also on its weight.
The merchant companion has limitations similar to those that apply to a horse: you cannot summon during a quest or battle, or indoors (you must be in the open world).
The Merchant Companion mod is available for free via Nexus Mods.